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Radeon HD 6990 vs Radeon RX 5600 XT

Intro

The Radeon HD 6990 makes use of a 40 nm design. AMD has set the core speed at 830 MHz. The GDDR5 RAM works at a speed of 1250 MHz on this model. It features 1536 SPUs as well as 96 Texture Address Units and 32 Rasterization Operator Units.

Compare all of that to the Radeon RX 5600 XT, which features GPU core speed of 1375 MHz, and 6144 MB of GDDR6 RAM set to run at 1500 MHz through a 192-bit bus. It also is made up of 2304 SPUs, 144 TAUs, and 64 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600 XT 160 Watts
Radeon HD 6990 375 Watts
Difference: 215 Watts (134%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 5600 XT should perform a bit faster than the Radeon HD 6990 overall. (explain)

Radeon RX 5600 XT 344064 MB/sec
Radeon HD 6990 320000 MB/sec
Difference: 24064 (8%)

Texel Rate

The Radeon RX 5600 XT is a lot (more or less 24%) more effective at anisotropic filtering than the Radeon HD 6990. (explain)

Radeon RX 5600 XT 198000 Mtexels/sec
Radeon HD 6990 159360 Mtexels/sec
Difference: 38640 (24%)

Pixel Rate

The Radeon RX 5600 XT will be much (approximately 66%) better at FSAA than the Radeon HD 6990, and capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 5600 XT 88000 Mpixels/sec
Radeon HD 6990 53120 Mpixels/sec
Difference: 34880 (66%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon HD 6990

Amazon.com

Check prices at:

Radeon RX 5600 XT

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 6990 Radeon RX 5600 XT
Manufacturer AMD AMD
Year March 2011 January 2020
Code Name Antilles Navi 10 XLE
Memory 2048 MB (x2) 6144 MB
Core Speed 830 MHz (x2) 1375 MHz
Memory Speed 5000 MHz (x2) 3000 GB/s
Power (Max TDP) 375 watts 160 watts
Bandwidth 320000 MB/sec 344064 MB/sec
Texel Rate 159360 Mtexels/sec 198000 Mtexels/sec
Pixel Rate 53120 Mpixels/sec 88000 Mpixels/sec
Unified Shaders 1536 (x2) 2304
Texture Mapping Units 96 (x2) 144
Render Output Units 32 (x2) 64
Bus Type GDDR5 GDDR6
Bus Width 256-bit (x2) 192-bit
Fab Process 40 nm 7 nm
Transistors 2640 million 10300 million
Bus PCIe 2.1 x16 PCIe 4.0 ×16
DirectX Version DirectX 11 DirectX 12
OpenGL Version OpenGL 4.1 OpenGL 4.6

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 6990

Amazon.com

Check prices at:

Radeon RX 5600 XT

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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